High endurance non-volatile storage
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United States of America Patent
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Oct 18, 2016
Grant Date -
May 12, 2016
app pub date -
Nov 11, 2014
filing date -
Nov 11, 2014
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Abstract
The manufacturing of the non-volatile storage system includes depositing one or more layers of reversible resistance-switching material for a non-volatile storage element. Prior to operation, either during manufacturing or afterwards, a forming operation is performed. In one embodiment, the forming operation includes applying a forming voltage to the one or more layers of reversible resistance-switching material to form a first region that includes a resistor and a second region that can reversibly change resistance at a low current, the resistor is formed in response to the forming condition and is not deposited on the device. In some embodiments, programming the non-volatile storage element includes applying a programming voltage that increases in voltage over time at low current but does not exceed the final forming voltage.
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